| Value | Category | Cases | |
|---|---|---|---|
| -1 | MIssing | 5 |
0.2%
|
| 0 | No | 324 |
13.5%
|
| 1 | Yes | 1961 |
81.7%
|
| 9 | Don't know | 109 |
4.5%
|
| 998 | Refused | 0 |
0%
|